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A144796 Expansion of x(5+215x-1253x^2-23x^3)/((1+34x+x^2)(1-34x+x^2)). 2
5, 215, 4517, 248087, 5212613, 286292183, 6015350885, 330380931095, 6941709708677, 381259308191447, 8010726988462373, 439972911271998743, 9244372002975869765, 507728358348578357975, 10667997280707165246437 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

The original definition "Numbers n such that (n^2-17)/2 is a square" describes A077242. - R. J. Mathar, Nov 27 2011

FORMULA

a(n)=1154*a(n-2)-a(n-4).

CROSSREFS

Sequence in context: A055316 A203470 A165208 * A206457 A119657 A159808

Adjacent sequences:  A144793 A144794 A144795 * A144797 A144798 A144799

KEYWORD

nonn

AUTHOR

Richard Choulet (richardchoulet(AT)yahoo.fr), Sep 21 2008

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Last modified February 16 01:31 EST 2012. Contains 205860 sequences.